bug#47673: Absurdly long input field in Customize

[Eli Zaretskii]

> Date: Fri, 09 Apr 2021 13:50:36 +0000
> From: scame <laszlomail@protonmail.com>
> Cc: "47673@debbugs.gnu.org" <47673@debbugs.gnu.org>
> 
> > What you see is not the actual length of the field, not at all.
> 
> OK, so is it that long, because the newline also has that
> text property? Then why put it on the newline?

Presumably because otherwise the face will not be extended to match
the input length.